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This page lists the Q.850 Cause Codes and their associated definition configurable on the SBC 1000/2000 (UX) system via the SIP to Q.850 Cause Code Mapping  and Q.850 Cause Code to SIP Mapping resources.

Code

Definition

1

Unallocated Number

2

No Route to Transit Network

3

No Route to Destination

4

Send Special Information tone

5

Misdialed Trunk Prefix

6

Channel Unacceptable

7

Call Awarded in Established Channel

8

Preemption

9

Preemption - Circuit Reserved for Reuse

16

Normal Call Clearing

17

User Busy

18

No User Responding

19

No Answer from User (user alerted)

20

Subscriber Absent

21

Call Rejected

22

Number Changed

23

Redirection to New Destination

25

Exchange Routing Error

26

Non-selected User Clearing

27

Destination Out of Order

28

Invalid Number Format (addr incomplete)

29

Facility Rejected

30

Response to STATUS ENQUIRY

31

Normal, Unspecified

34

No Circuit/Channel Available

38

Network Out of Order

39

Permanent Frame Mode Connection OoS

40

Permanent Frame Mode Connection Oper

41

Temporary Failure

42

Switching Equipment Congestion

43

Access Information Discarded

44

Requested Circuit/Channel N/A

46

Precedence Call Blocked

47

Resource Unavailable, Unspecified

49

Quality of Service Not Available

50

Requested Facility Not Subscribed

53

Outgoing Calls Barred Within CUG

55

Incoming Calls Barred Within CUG

57

Bearer Capability Not Authorized

58

Bearer Capability Not Available

62

Inconsistency in Outgoing IE

63

Service or Option N/A, unspecified

65

Bearer Capability Not Implemented

66

Channel Type Not Implemented

69

Requested Facility Not Implemented

70

Only Restricted Digital Bearer Cap supported

79

Service or Option Not Implemented, Unspecified

81

Invalid Call Reference Value

82

Identified Channel Does Not Exist

83

Call Exists, but Call Identity Does Not

84

Call Identity in User

85

No Call Suspended

86

Call with Requested Call Identity has Cleared

87

User Not Member of CUG

88

Incompatible Destination

90

Non-existent CUG

91

Invalid Transit Network Selection

95

Invalid Message, Unspecified

96

Mandatory Information Element is Missing

97

Message Type Non-existent / Not Implemented

98

Message Incompatible With Call State or Message Type

99

IE/Parameter Non-existent or Not Implemented

100

Invalid Information Element Contents

101

Message Not Compatible With Call State

102

Recovery on Timer Expiry

103

Parameter Non-existent / Not Implemented, Passed On

110

Message With Unrecognized Parameter, Discarded

111

Protocol Error, Unspecified

127

Interworking, Unspecified

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